25094

Appears in sequences

• Starting positions of strings of three 3's in the decimal expansion of Pi.at n=14A083610
• Numbers n such that there are precisely 2 groups of order n and 3 of order n + 1.at n=25A296025
• Number of total dominating sets in the n-dipyramidal graph.at n=12A347481
• a(n) = Sum_{k=0..n} binomial(n,k)^2 * abs(Stirling1(2*k,k)) * abs(Stirling1(2*n-2*k,n-k)).at n=4A384495